package com.sky.service.impl;

import com.fasterxml.jackson.databind.ser.Serializers;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.AccountRepetedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import com.sky.vo.EmployeeVO;
import io.jsonwebtoken.Claims;

import java.time.LocalDateTime;
import javax.servlet.http.HttpServletRequest;

import io.swagger.models.auth.In;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;


@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;
    @Autowired
    private HttpServletRequest httpServletRequest;
    @Autowired
    private JwtProperties jwtProperties;


    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);


        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        String password1 = DigestUtils.md5DigestAsHex(password.getBytes());

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password1.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void createEmployee(EmployeeDTO employeeDTO) {

        Long userId = BaseContext.getCurrentId();

        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        String password = DigestUtils.md5DigestAsHex((PasswordConstant.DEFAULT_PASSWORD).getBytes());
        employee.setPassword(password);
        employee.setStatus(StatusConstant.ENABLE);
        employeeMapper.insertEmployee(employee);

    }


    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeePageQueryDTO, employee);
        Page<Employee> employees = employeeMapper.selectPage(employee.getUsername());
        employees.getResult().stream().forEach(item -> item.setPassword(null));
        PageResult pageResult = new PageResult(employees.getTotal(), employees.getResult());
        return pageResult;

    }

    @Override
    public void updateStatus(Long id, Integer status) {
        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);
        employeeMapper.updateById(employee);

    }

    @Override
    public EmployeeVO queryById(Long id) {
        Employee employee = employeeMapper.seleteById(id);
        EmployeeVO employeeVO = new EmployeeVO();
        BeanUtils.copyProperties(employee, employeeVO);
        return employeeVO;
    }

    @Override
    public void updateEmployee(Employee employee) {
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());

        employeeMapper.updateEmployee(employee);
    }

}